'use strict';
//const collection = [1, 2, 3, 4, 5];
var map_to_four_multiples_add_one = function (collection){
  let arr=[];
  for(let item of collection){
    let a=item*4+1;
    arr.push(a);
  }
  console.log(arr);
  console.log(arr);
  return arr;
  // return [5,9,13,17,21];
};

module.exports = map_to_four_multiples_add_one;
//k([1, 2, 3, 4, 5]);